Pipe-coupling.



U'NIT STATES PATENT ARTHUR B. HENRY,

SPECIFICATION forming part of Letters-P Application filed April 5, 1

Fries.

or onnser, AND rino'rnr r. MULLIN,

PENNSYLVANIA. I

or BRADFORD,

PIPE-COUPLING.

To all whom it may concern:

Be it known that we, ARTHUR B. HENRY, of Ormsby, and TIMOTHY F. MULLIN, of Bradford, in the county of McKean and State of Pennsylvania, have invented a new and Improved Pipe-Coupling, of which the following is a full, clear, and exact description. i The object of the invention is to provide a new and improved coupling or joint for pipes used for conducting oil, gas, other gaseous or liquid The invention consists of novel features and parts and combinations will be fully described hereinafter'and then pointedout in the claims.

Figure 1 is a sectional side fluids and arranged to prevent leakage upon expansion and contraction of the pipe and to avoid injury to the packing by the corrosive action of the fluid passing through the coupling.

steam, water, or

of thesanle, as

elevation of the improvement, and Fig. 2 is a-transverse section of the same on the line 2 2 in Fig. 1.

atent No. 634,820, dated October 10, 1899.

899. Serialll'o. 711,805. (No-model.)

nular flanges B B forme'd on the ends of the pipes B B next to the threads B B by reducing the ends to leave annular shoulders 13 B for engaging the outer side edges oi the packing-rings G 0. It is evident that when the sleeve A is provided with the packing rings G O and the corresponding pipe 13 or B is screwed into its threaded section A or A of the said sleeve, then the annular flange B or B finally passes into the opening of the corresponding packing-ring, and the corresponding shoulder B or B finally engages and presses the outer edge of the packingring to compress the same in the annular groove A or A and force the packing-ring material against the annular flange B or B to form avery secure joint between the inner ends of the pipes and the sleeve, so that no leakage is liable to take place.

, From the foregoingit is evident that the packing-rings do not project inside into the coupling or the pipes, and hence do not form 7o The improved pipe-coupling is provided Ipassing through the coupling, so that all poswith a coupling-sleeve A, formed at its ends with internally: threaded sections A A,

adapted to receive the externally-threaded ends l3 13 of the pipes B B to .be coupled together by the sleeve, as indicated in Fig. 1.

The sleeve A is formed at the-inner ends of 5 the threaded sections A grooves A A, respectively, of a depth some= A with annular what more than the depth of the threads in the sections A A Fig. 1.

as is plainly indicated in In the grooves A A are placed the packing-rings G C, respectively,

her composition, or other suitable material, according to the nature of the fluid passing through the pipe.

of rubber, rub-T The inner edges of said i engaged by ani sible corrosive action of the fluid on the packing-rings is completely avoided.

Having thus fully described our invention, we claim as new and desire to secure by Let- 8'0 ters Patent 1. A pipe-coupling, comprising a coupling sleeve having internally-threadedend sec tions and an intermediate smooth section, am nular grooves at the inner ends of the said threaded sections, for the reception of packing-rings, pipes screwing into said threaded .endsections of the sleeve and having their ends reduced to form annular flanges for fit ting into the packing-rings, and shoulders for 0 abutting against and pressing the outer side edges of the packing-rings, substantially as shown and described.

2. A pipe-coupling, comprising a coupling sleeve having internally-threaded en'd'seotions, annular grooves at the inner ends of sztid threaded sections for the reception of i outer side edges of the packing-rings, subpacking-rings, shoulders for the inner edges sl'antially as shown and described.

of the packing-rings to abut against, pipes ARTHUR B. HENRY. screwing in the threaded end sections and hav- TIMOTHY F. MULLIN. ing their ends reduced to form annularfianges WVitnesses: I for fitting into the packing-rings, and shoul- E. W. MULLIN, ders for abutting against and pressing the J. MARSHALL. 

